How does VPN encryption work, though?
Here’s how itkeeps your connection secure.
VPN Protocols
To understand VPN encryption, we first need to go overVPN protocols.
The only way to unlock this mess and make it readable again is to use a so-called key.
In this case, a “key” is a piece of data that can unlock encrypted information.
The most basic way of handling keys is symmetric encryption, also known as shared key encryption.
AES was developed by the U.S. government and is themilitary-grade encryptionso many companies like to boast of.
Blowfish was developed as an open-source cipher, but there is alot of discussionon how secure it is.
The longer the better, so AES-256 (so 256 bits) is more secure than AES-128.
To prevent this from happening, you gotta somehow encrypt the shared keys being sent.
Much better, instead, to introduce a new kind of cipher, using public key encryption.
However, the public key is only half of the equation.
This way, data can be transmitted more or less freely but safe from interference or snooping.
TLS itself also uses encryption to secure information, often using a simpler encryption cipher called RSA.
It works as a failsafe in case an attacker figures out how to fake a certificate.
There are several types of hashing algorithms: the most commonly used is SHA, more specifically SHA-2.
